JPS59117947A - Shuttle motion device - Google Patents

Abstract

PURPOSE:To prevent a thrust load from acting on rotary pieces brought in contact with a swash cam, by allowing the axial line of the turning center of a shuttle moving member to pass through the intersecting point between the core of a driving shaft of the swash cam and the surface of the swash cam. CONSTITUTION:A swivelling member 4, being swivelled as a shuttle moving member in accordance with rotation of a swash cam 2 secured to a driving shaft 1, is turnably supported to supporting shafts 3 through a supporting lever 6, penetrating and secured to an output arm 4b, and supporting brackets 7. The supporting shafts 3 are provided in such a manner that the core C2 of said shafts crosses at a right angle with the core C1 of the driving shaft 1 further passes through an intersecting point O (not moved) where said core C1 crosses with a cam surface 2a. Considering a case such that the driving shaft 1 rotates 180 deg. to move one of the rotary pieces 5A upward from the position of a full line to the position of a chain line in the drawing, a distance l between a contact point S, in which the rotary piece 5A is brought in contact with the cam surface 2a, and the intersecting point O is always constant. Accordingly, the rotary piece 5A never slides on the cam surface 2a in the direction of the center axial line C3, thus a thrust load never acts on said rotary piece 5A.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a reciprocating motion device (
This is related to this.

As shown in FIG.
Here, the drive shaft 1 and the swash plate force l fixed obliquely to the same shaft 1.
. This device (in this case, as the ff1l tli cam 2 rotates, the cam surface 2a of the swash plate cam 2 is provided on the pair of arms 4a of the swinging part 4, and
The swinging member 4 is reciprocated via the rotors 5A and 5B that are in contact with the rotors 5A and 5B.

However, in the conventional device, the axis C2 of the support shaft 3 intersects the rotation center axis C3 of the rotor 5 and is provided at a position spaced apart from the cam surface 2a, and as the swash plate cam 2 rotates, the rotation The child 5 had a defect in that a load was applied in the direction of the central axis C3. Considering the case where the drive shaft 1 rotates 180 degrees and one rotor 5A moves upward from the position shown by the solid line to the position shown by the chain line in FIG.
The distance r between the contact point S of the cam surface 2a and the rotor 5A and the axis C2 of the support shaft 3 is always constant, or is a fixed point) and the contact point S (represented by L) changes.In other words, the distance at the solid line position of the rotor 5A is 41,
Inside the box at the chain line position (1; If L is represented by 12, then ll (
It has the relationship #12.

Therefore, if the rotation T-5A is moved up, the same rotation T-5A
The amount of force moving away from the central axis C3 direction, that is, the intersection O, will slide completely on the surface 2a. power 1
One. Zunawara, this (+yH friction force grip force central axis C
This is a thrust load in three force directions.

1111 'l' f-5A f, i:i'113j
When moving downward from the ij position to the solid line position γ) No. 2 and To 1
For JIl Rutl ・5A, the thrust load of Togetsuka (however, the direction is reversed (Konaru) or added, or one side. Also, other Jj
The same situation occurs in times Ill, (: f・5 B.

This kind of thrust load occurs at rotation f-5A.

513 bearing j; Ii loss 1 easy (with connection,
This means that the rotors 5A and 5I3 have a large amount of wear at their contact portions with the swash plate cam 2, and furthermore, the rotational movement of the drive shaft 1 cannot be efficiently converted into reciprocating motion.

The present invention has been made taking into consideration the facts of the 1st universe, and its purpose is to convert rotational motion into reciprocating motion (this is the swash plate that is in contact with the swash plate). To provide a reciprocating device that does not require thrust loads.

Hereinafter, an embodiment embodying the present invention is shown in Figures 2 and 3.
To explain 11-1, as the shikamuku rotates (v) (attached to the drive shaft 1 at the same time), the rotation of the cam surface 2a+ of the cam 2 provided on the pair of arms 4a and in contact with the cam surface 2a+ of the cam 2. r
・II, which is swung through 5 A and 5 B, is a swiveling section using a double interlocking section ("), and IA4 is connected to output 1 and L'1 to 4b.
The support shaft 3ζ is rotatably supported via the support bar 6 which is fixed through the support bar 6 and the support brackets 7 connected to both ends of the bar 6.

The support shaft 3 is aligned with its axis C2 or with the axis C1 of the drive shaft 1.
L, and a guard is provided to trace the intersection point 0 (this is immovable) between the coaxial core C1 and the cam surface 2a. Further, the rotational center axis C3 of the rotors 5A, 5B intersects the axis C1 of the drive shaft 1, and is perpendicular to the axis C2 of the support shaft 3 when projected onto the force l and plane 2a.

S-C, if the drive shaft 1 rotates 180 degrees and one rotor 5A moves upward from the position shown by the solid line to the position shown by the chain line, as shown in Fig. 3, the cam surface 2a and the rotation J
The distance 4 between the contact point S with '-5A and the intersection 0 is always constant. This is because the axis C2 passes through the intersection 0, so the contact point S
This is because the distance between and the intersection O is equal to the distance between the contact point S and the axis C2.

At No. 1 C, the rotation f 5 A or the direction of the central axis C3 is turned, and the song 2a1. The same rotation f5 does not help the sliding.
A (This thrust cargo load will not be applied.November 1-
In addition, the thrust load of 1 of 1, r.5, will not increase.

As a result, there is no risk of damage to the bearings of the rotors 5A and 5B, and the swash plate of the rotors 5A and 5B is in contact with the 2. 7; There is little wear on the openings, and furthermore, the rotational interlocking of the 17-movement 1llll11 can be efficiently converted into reciprocating motion.

As described in detail below (this invention is based on one reciprocating member).
Since the middle axis is traced to the intersection of the center axis or the axis of the 1st drive shaft of the swash plate cam and the swash plate cam, there is no thrust load applied to the rotation t in contact with the swash plate cam. It has an effect of ↓.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a conventional reciprocating device, FIG. 2 is a side view showing an embodiment embodying the present invention, and FIG.
It is a sectional view taken along the line AA in the figure. (Drive shaft 1.4; 1 plate cam 2, cam surface 2a, support shaft 3
, Swinging part] 14, Rotation f・5A, 5B, Axis C1, C2
, intersection O0 Patent applicant: Chufeng Co., Ltd. 111 Automatic Textile Manufacturing Co., Ltd. Agent: Patent attorney On Il + Fu Xuan

Claims (1)

[Claims] 1 Slanting Cam! A reciprocating motion device having a rotational center axis perpendicular to the drive shaft (this rotor is provided), and the force of the swash plate cam is
The rotation of the drive shaft τ・■ through the same rotation f- which is in contact with the surface
1. The device for converting the reciprocating motion of the reciprocating member into a reciprocating motion is configured such that the rotation center axis passes through the intersection of the axis of the drive shaft and the j:I plate cam surface.
．． ) A reciprocating device with a characteristic.